+for command in unlzma wget; do
+ if ! which "${command}" &>/dev/null; then
+ echo "Cannot run \`${command}\`. Please read compiling.txt." 1>&2
+ exit 1
+ fi
+done
+
+if tar --help | grep bsdtar &>/dev/null; then
+ echo "Running \`tar\` is bsdtar :(. Please read compiling.txt." 1>&2
+ exit 1
+fi